In reply to Azwhite:
Hmm, that's interesting, because when I've tried to TR routes about that grade, I find them feeling
harder than the lead equivalent. (I'd assumed that they factored in the fact you are on a TR.) There are a couple of F7b's to the rhs of the tower which feel pretty punchy for 7B - one I couldn't get past a stopper-move at 1/2 or 2/3 height, so I'd definitely say that one wasn't soft.
Overall, though I've generally found the (leading) routes at Ratho to be well graded. I've not climbed at that many other walls tbh, but compared to outdoors routes, I think they're pretty accurate. The setters are all a very decent bunch and have climbed extensively, so in theory at least, they should know what a given grade is. I understand that Gaz Vincent now grades all the routes (it might just be the lead ones however) and he's pretty gnarly - I find the routes he sets to be among the hardest for their grade.